Multifunctional Metal-C-Fiber-Polymer-Laminates (MCFRP): Modeling and property analysis for damage tolerant, conductive and monitorable lightweight structures

多种且往往相互冲突的要求必须通过创新的、高性能的运输系统结构来满足。它们必须表现出低质量、高承载能力和高损伤容限。在两个研究项目的范围内，制造了碳纤维和金属纤维（MCRP）的混合层压板，将多种功能结合在一个复合材料中。可以证明，局部集中的钢纤维层改善了损伤容限以及导电性。此外，它表明，整合的亚稳奥氏体钢纤维，使磁传感器的应用程序的非接触式评估和监测的加载结构由于变形引起的相变的亚稳钢纤维。在此基础上，进一步探讨了这一新型杂化材料的应用问题，并展望了其应用前景。合适的仿真模型必须定义和实验验证的基本机械以及电气层压板性能。此外，详细的疲劳实验和混合层压板的冲击试验计划在低温和高温下的典型限制适用于机身材料。最后，新的研究结果和模型进行了验证的设计和实验表征的多功能通用结构元件。

Multiple and often conflicting requirements have to be fulfilled by innovative, high-performance structures of transportation systems. They must demonstrate low mass, high load bearing capability and high damage tolerance. Within the scope of two research projects , hybrid laminates with carbon fibers and metal fibers (MCFRP) were manufactured, combining multiple functions within one composite. It could be demonstrated that locally concentrated layers of steel fibers improve damage tolerance as well as electrical conductivity. In addition, it was shown that the integration of metastable austenitic steel fibers enables the application of magnetic sensors for contact-less assessment and monitoring of loaded structures due to deformation-induced phase transformation of the metastable steel fibers. Based on these fundamental findings, more applied questions will be now adressed in order to investigate the limits and prospects of the new hybrid material. Suitable simulation models have to defined and experimentally verified for the fundamental mechanical as well as electrical laminate properties. In addition, detailed fatigue experiments and impact tests of hybrid laminates are planned at low and high temperatures within the typical limits applied to airframe materials. Finally, the new findings and models are verified by the design and experimental characterization of a multifunctional generic structural element.